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A hairball type ti 3 c 2 Preparation methods and applications of (mxene) nanomaterials

A technology of nanomaterials and hair balls, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of low material quality, achieve simple process, good electrochemical performance, and fluffy surface Effect

Active Publication Date: 2021-01-26
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Yury Gogotsi et al published "Two-Dimensional Nanocrystals Produced by Exfoliation of Ti 3 AlC 2 , Adv. Mater. 2011, 23, 4248–4253", the paper firstly put Ti 3 AlC 2 Adding it to HF to etch away Al to prepare sheet-layer MXene, the process is simple and easy to implement, but the mass specific capacitance of the material is very low

Method used

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  • A hairball type ti <sub>3</sub> c <sub>2</sub> Preparation methods and applications of (mxene) nanomaterials
  • A hairball type ti <sub>3</sub> c <sub>2</sub> Preparation methods and applications of (mxene) nanomaterials
  • A hairball type ti <sub>3</sub> c <sub>2</sub> Preparation methods and applications of (mxene) nanomaterials

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Effect test

Embodiment 1

[0024] The hairball type Ti of the present embodiment 3 C 2 (MXene) nanomaterial preparation method, the steps are as follows:

[0025] (1) Add 1g precursor Ti 3 AlC 2 Add (MAX) to 120 ml HF, stir magnetically at room temperature for 72 hours, centrifuge and wash until neutral, collect the precipitate, and dry at 60°C to obtain a black powder, which is two-dimensional Ti 3 C 2 (MXene) materials;

[0026] (2) Add 100 mg Ti 3 C 2 The material was added to a solution containing 30 ml 1 M NaOH and 0.68 ml 30 % H 2 o 2 In the mixed solution, stir evenly. Then, hydrothermal treatment was carried out at 140 °C for 12 h, and the precipitate was collected by centrifugation, and the obtained powder sample was dried at 60 °C for 12 h to obtain hairball-type Ti 3 C 2 (MXene) nanomaterials, denoted as NT.

[0027] Experimental process such as figure 1 As shown, the SEM images and electrochemical spectra of the prepared nanomaterials are shown in figure 2 and image 3 shown....

Embodiment 2

[0029] The hairball type Ti of the present embodiment 3 C 2 (MXene) nanomaterial preparation method, the steps are as follows:

[0030] (1) Add 1 g precursor Ti 3 AlC 2 (MAX) was added to 120 ml solution, magnetically stirred at room temperature for 72 hours, centrifuged and washed until neutral, the precipitate was collected, and dried at 60°C to obtain a black powder, which was two-dimensional Ti 3 C 2 (MXene) materials;

[0031] (2) Add 100 mg Ti 3 C 2 (MXene) material was added to the solution containing 30 ml 1 M potassium hydroxide and 0.68 ml 30% H 2 o 2 In the mixed solution, stir evenly. Then, hydrothermal treatment was carried out at 100 °C for 12 h, the precipitate was collected by centrifugation, and the obtained powder sample was dried at 60 °C for 12 h to obtain the hairy-shaped Ti 3 C 2 (MXene) nanomaterials, denoted as KT.

[0032] Experimental process such as figure 1As shown, the SEM images and electrochemical spectra of the prepared nanomaterial...

Embodiment 3

[0034] The hairball type Ti of the present embodiment 3 C 2 (MXene) nanomaterial preparation method, the steps are as follows:

[0035] (1) Add 1 g precursor Ti 3 AlC 2 Add (MAX) to 120 ml (LiF-HCl), stir magnetically at room temperature for 72 hours, centrifuge and wash until neutral, collect the precipitate, and dry at 60°C to obtain a black powder, which is two-dimensional Ti 3 C 2 (MXene) materials;

[0036] (2) Add 100 mg Ti 3 C 2 (MXene) material was added to a solution containing 30 ml 0.5 M KOH and 0.34 ml 30 % H 2 o 2 In the mixed solution, stir evenly. Then, hydrothermal treatment was carried out at 140 °C for 12 h, the precipitate was collected by centrifugation, and the obtained powder sample was dried at 60 °C for 12 h.

[0037] Experimental process such as figure 1 As shown, the SEM images and electrochemical spectra of the prepared nanomaterials are shown in Figure 5 and image 3 shown.

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Abstract

The invention discloses a hairball type Ti 3 C 2 The preparation method and application of (MXene) nanomaterials, the steps are as follows: the precursor Ti 3 AlC 2 Add (MAX) to HF, stir magnetically at room temperature for 72 hours, centrifuge and wash until neutral, collect the precipitate, and dry at 60°C to obtain a black powder, which is two-dimensional Ti 3 C 2 (MXene) material; the two-dimensional Ti 3 C 2 (MXene) material is added to the 2 o 2 In the mixed solution, stir evenly, then conduct hydrothermal treatment, collect the precipitate by centrifugation, and dry at 60°C to obtain a white powder sample, which is the hairball-type Ti 3 C 2 (MXene) nanomaterials. Hairy Ti 3 C 2 (MXene) nanomaterials have excellent electrochemical energy storage performance, which provides a simple and easy-to-operate preparation path for their application in electrode materials such as supercapacitors and lithium-ion batteries.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, in particular to a method for preparing hairball-type Ti 3 C 2 (MXene) nanomaterials approach. Background technique [0002] Ti 3 C 2 (MXene) is a new type of graphene-like two-dimensional material. The rich functional groups on its surface endow it with excellent chemical reactivity and hydrophilicity. The unique structure makes it have good electrical conductivity and thermal stability, thereby increasing its energy storage. It has been widely used in electrochemical energy storage fields such as supercapacitors, lithium-ion batteries, and sodium-ion batteries, and has become a research hotspot in the fields of chemistry, physics, and materials. However, its low mass-to-capacity and easy agglomeration hinder its wider application. Therefore, how to prepare Ti with different morphologies 3 C 2 (MXene) is the prerequisite for its extensive application in the above fields. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/921H01M4/583B82Y30/00
CPCB82Y30/00C01P2004/20C01P2004/32C01B32/921H01M4/583Y02E60/10
Inventor 李子炯刘燕月朱祥杨鹏郭东方商继敏孙敏程学瑞
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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